<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
		button{
			margin-left: 10px;
			width: 20px;
			height: 20px;
			background-position: center center;
			background-color: #F2F2F2;
			border: none;
			background-repeat: no-repeat;
		}
		.b1{
			background-image:url(001.png);
		}
		.b2{
			background-image:url(002.png);
		}
		.b3{
			background-image:url(003.png);
		}
		.b4{
			background-image:url(004.png);
		}
		.b5{
			background-image:url(005.png);
		}
		.b6{
			background-image:url(006.png);
		}
		.b7{
			background-image:url(007.png);
		}
		.b8{
			background-image:url(008.png);
		}
		.b9{
			background-image:url(009.png);
		}
		.b10{
			background-image:url(010.png);
		}
		.b11{
			background-image:url(011.png);
		}
		.b12{
			background-image:url(012.png);
		}
		.b13{
			background-image:url(013.png);
		}
		.b14{
			background-image:url(014.png);
		}
		.b15{
			background-image:url(015.png);
		}
		.b16{
			background-image:url(016.png);
		}
		.b17{
			background-image:url(017.png);
		}
		.b18{
			background-image:url(018.png);
		}
		.b19{
			background-image:url(019.png);
		}
		.b20{
			background-image:url(020.png);
		}
		.b21{
			background-image:url(021.png);
		}
	</style>
</head>
<body>
	<div style="background-color: #F2F2F2;">
		<button class="b1"></button>
		<button class="b2"></button>
		<button class="b3"></button>
		<button class="b4"></button>
		<button class="b5"></button>
		<button class="b6"></button>
		<button class="b7"></button>
		<button class="b8"></button>
		<button class="b9"></button>
		<button class="b10"></button>
		<button class="b11"></button>
		<button class="b12"></button>
		<button class="b13"></button>
		<button class="b14"></button>
		<button class="b15"></button>
		<button class="b16"></button>
		<button class="b17"></button>
		<button class="b18"></button>
		<button class="b19"></button>
		<button class="b20"></button>
		<button class="b21"></button>
	</div>
	<br/>
	<img src="000.png" style="margin-top:20px;"><br/>
<img src="all.png" style="margin-top:20px;">
</body>
</html>